2154657461 has 16 divisors (see below), whose sum is σ = 2410442496. Its totient is φ = 1908960000.

The previous prime is 2154657413. The next prime is 2154657473. The reversal of 2154657461 is 1647564512.

2154657461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2154657461 - 2⁶ = 2154657397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154657161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553241 + ... + 557121.

It is an arithmetic number, because the mean of its divisors is an integer number (150652656).

Almost surely, 2^2154657461 is an apocalyptic number.

It is an amenable number.

2154657461 is a deficient number, since it is larger than the sum of its proper divisors (255785035).

2154657461 is a wasteful number, since it uses less digits than its factorization.

2154657461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164.

The product of its digits is 201600, while the sum is 41.

The square root of 2154657461 is about 46418.2880016056. The cubic root of 2154657461 is about 1291.5941793762.

The spelling of 2154657461 in words is "two billion, one hundred fifty-four million, six hundred fifty-seven thousand, four hundred sixty-one".